Light emitting device and control method thereof

Patent metadata

Field	Value
Publication number	US-11441745-B2
Application number	US-202017069319-A
Country	US
Kind code	B2
Filing date	Oct 13, 2020
Priority date	Oct 15, 2019
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A light emitting device is provided. The light emitting device includes a first light emitter comprising a plurality of light emitting elements configured to emit light in a visible light region, a second light emitter comprising a plurality of light emitting elements configured to emit light in an ultraviolet B (UVB) region, and at least one processor configured to control the first light emitter and the second light emitter so that a sum of an intensity of light emitted from the first light emitter and an intensity of light emitted from the second light emitter is greater than or equal to a threshold illuminance value.

First claim

What is claimed is:

1. A light emitting device comprising:
a first light emitter comprising a plurality of light emitting elements configured to emit light in a visible light region;
a second light emitter comprising a plurality of light emitting elements configured to emit light in an ultraviolet B (UVB) region; and
at least one processor configured to control the first light emitter and the second light emitter so that a sum of an intensity of light emitted from the first light emitter and an intensity of light emitted from the second light emitter is greater than or equal to a threshold illuminance value,
wherein the light emitting device is implemented as a wall-hanging type installable on a wall and comprises a window-shaped structure, and
wherein the at least one processor is further configured to:
identify a state of the window-shaped structure,
control each of the first light emitter and the second light emitter to emit light based on an identification that the state of the window-shaped structure is a first state, and
control each of the first light emitter and the second light emitter not to emit light based on an identification that the state of the window-shaped structure is a second state.

2. The light emitting device of claim 1 ,
wherein the plurality of light emitting elements of the first light emitter include a white light emitting element and at least one remaining light emitting element,
wherein a ratio of an intensity of light emitted by the white light emitting element to an intensity of light emitted by the at least one remaining light emitting element is greater than or equal to a threshold ratio, and
wherein the at least one remaining light emitting element is implemented as at least one of a red light emitting element, a green light emitting element, or a blue light emitting element.

3. The light emitting device of claim 1 , further comprising:
a first light collector disposed in a front surface of the first light emitter, the first light collector configured to collect and irradiate light emitted from the first light emitter; and
a second light collector disposed in a front surface of the second light emitter, the second light collector configured to collect and irradiate light emitted from the second light emitter,
wherein light irradiated from each of the first light collector and the second light collector has straightness.

4. The light emitting device of claim 3 , further comprising:
a motor connected to the first light emitter and the second light emitter,
wherein the at least one processor is further configured to:
identify a space among spaces in which the light emitting device is installed based on current time information, and
control the motor to adjust a light emission direction of the first light emitter and the second light emitter so as to irradiate the identified space with light.

5. The light emitting device of claim 1 ,
wherein the light emitting device is implemented as a device installable on a wall,
wherein the first light emitter is disposed on one side of the light emitting device, and
wherein the second light emitter is disposed to be adjacent to the first light emitter on the one side of the light emitting device.

6. The light emitting device of claim 1 , further comprising:
a sensor,
wherein the at least one processor is further configured to:
adjust the threshold illuminance value based on an illuminance value of light sensed through the sensor, and
control the intensity of light emitted from the first light emitter and the intensity of light emitted from the second light emitter based on the adjusted threshold illuminance value.

7. The light emitting device of claim 1 ,
wherein the plurality of light emitting elements included in the first light emitter comprise a white light emitting element, a red light emitting element, a green light emitting element, and a blue light emitting element, and
wherein the at least one processor is further configured to:
identify color temperature information corresponding to at least one of a current time or a current weather, and
control an intensity of at least one light emitting element among the plurality of light emitting elements included in the first light emitter to emit light corresponding to the identified color temperature.

8. The light emitting device of claim 1 , further comprising:
a communication interface configured to receive a control signal,
wherein the at least one processor is further configured to control at least one of whether to emit light by each of the first light emitter and the second light emitter, the threshold illuminance value, a color temperature of light emitted from the first light emitter, or a light emission direction of each of the first light emitter and the second light emitter based on the control signal.

9. A control method of a light emitting device, the method comprising:
causing a first light emitter comprising a plurality of light emitting elements configured to emit light in a visible light region to emit light;
causing a second light emitter comprising a plurality of light emitting elements configured to emit light in an ultraviolet B (UVB) region to emit light; and
controlling the first light emitter and the second light emitter so that a sum of intensity of light emitted from the first light emitter and intensity of light emitted from the second light emitter is greater than or equal to a threshold illuminance value,
wherein the light emitting device is implemented as a wall-hanging type installable on a wall and comprises a window-shaped structure, and
wherein the controlling comprises:
identifying a state of the window-shaped structure;
controlling each of the first light emitter and the second light emitter to emit light based on an identification that the state of the window-shaped structure is a first state; and
controlling each of the first light emitter and the second light emitter not to emit light based on an identification that the state of the window-shaped structure is a second state.

10. The method of claim 9 ,
wherein the plurality of light emitting elements of the first light emitter include a white light emitting element and at least one remaining light emitting element,
wherein a ratio of an intensity of light emitted by the white light emitting element to an intensity of light emitted by the at least one remaining light emitting element is greater than or equal to a threshold ratio, and
wherein the at least one remaining light emitting element is implemented as at least one of a red light emitting element, a green light emitting element, or a blue light emitting element.

11. The method of claim 9 ,
wherein the light emitting device further comprises:
a first light collector disposed in a front surface of the first light emitter, the first light collector configured to collect and irradiate light emitted from the first light emitter; and
a second light collector disposed in a front surface of the second light emitter, the second light collector configured to collect and irradiate light emitted from the second light emitter, and

wherein light irradiated from each of the first light collector and the second light collector has straightness.

12. The method of claim 11 ,
wherein the light emitting device further comprises a motor connected to the first and second light emitters, and
wherein the method further comprises:
identifying a space among spaces in which the light emitting device is installed based on current time information, and
controlling the motor to adjust a light emission direction of the first light emitter and the second light emitte

Assignees

• Samsung Electronics Co Ltd

Inventors

• Park Sooyeon
• Kim Myungkyum
• Kim Minjun
• Cho Taesik
• Han Jeongho

Classifications

• A61N2005/0662

  Visible light · CPC title

• A61N2005/0648

  the light being directed to the eyes · CPC title

• A61N2005/0644

  Handheld applicators · CPC title

• A61N2005/0642

  Irradiating part of the body at a certain distance · CPC title

• A61N2005/0636

  Irradiating the whole body · CPC title